CN112670727A - 10kV live working overlap arc extinction device - Google Patents
10kV live working overlap arc extinction device Download PDFInfo
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- CN112670727A CN112670727A CN202011580970.5A CN202011580970A CN112670727A CN 112670727 A CN112670727 A CN 112670727A CN 202011580970 A CN202011580970 A CN 202011580970A CN 112670727 A CN112670727 A CN 112670727A
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Abstract
A10 kV live working overlap arc extinguishing device comprises: the arc extinguishing device comprises an insulating operating rod, a wire clamp, an arc extinguishing mechanism, a switching mechanism, a wiring guide pillar and a drainage wire; the top of the insulated operating rod is connected with a wire clamp through a screw rod; the back of the wire clamp is fixedly connected with one side face of the arc extinguishing mechanism through a connecting piece; the switching mechanism is arranged on one side, opposite to the wire clamp, outside the arc extinguishing mechanism; the wiring guide pillar is fixedly and electrically communicated with the bottom of the arc extinguishing mechanism; one end of the drainage wire is connected with the wiring guide pillar through an equipment wire clamp; the lead is electrically communicated with the drainage wire through the lead wire clamp, the arc extinguishing mechanism and the wiring guide pillar.
Description
Technical Field
The invention relates to the technical field of hot-line work auxiliary tools, in particular to a 10kV hot-line work lapping arc extinction device.
Background
With the development of social economy, the quality of life of people is continuously improved, the requirement on power supply reliability is higher and higher, and the application of a live working technology in the work of 10kV power distribution network overhaul construction, maintenance and defect elimination, user access and the like becomes the most direct and effective important technical means for improving the power supply reliability. When 10kV live working overlap joint branch line or cable run, for guaranteeing branch line or cable run lapped safety, need overlap joint interim drainage wire earlier, but when the overlap joint drainage wire, because induction capacitance, the influence of electric current, very easily produce electric arc, be unfavorable for safe operation, adopt insulating bar to directly overlap joint the drainage wire on the main guide wire in the tradition more, because the use of action bars, the point distance that produces arc light has the certain distance from the operation personnel, but because manual operation insulating bar overlap joint speed is slower, the arc light of corresponding production is also great, can't eliminate the arc light simultaneously, still there is great potential safety hazard. In order to overcome the defects, 200420022855.6 in the prior art provides an electrified arc extinction and conduction operating rod, but the problems exist that firstly, a moving contact and a static contact are in single-point contact, the contact point is easy to wear and lose efficacy, a conductive path cannot be formed after the contact point loses efficacy, the service life of equipment is short, and potential safety hazards exist; secondly, the moving contact is arranged below the static contact, moves from bottom to top to the position of the static contact under the elasticity of the pressure spring and is communicated with the static contact, and the moving contact moves towards the static contact at a lower speed due to the fact that a part of elasticity of the pressure spring can be counteracted under the action of gravity, and the arc light is generated when the moving contact and the static contact are about to be contacted, so that the probability of arc light generation is increased due to the fact that the moving speed of the moving contact is lower, the arc extinction effect is poorer, and the safety is lower; thirdly, the moving contact is connected with a wiring bolt through a conducting wire wound on the insulating connecting rod, so that the through-current capacity is weak and the safety is low; fourthly, the opening and closing operation mechanism, the insulating connecting rod, the moving contact and the static contact are coaxially arranged in the main body insulating tube, and the main body insulating tube is easy to damage due to frequent operation of the opening and closing operation mechanism, so that potential safety hazards are brought.
Disclosure of Invention
In view of the above, it is desirable to provide a 10kV live working overlap arc-extinguishing device capable of improving the working safety and the arc-extinguishing effect.
A10 kV live working overlap arc extinguishing device comprises: the arc extinguishing device comprises an insulating operating rod, a wire clamp, an arc extinguishing mechanism, a switching mechanism, a wiring guide pillar and a drainage wire; the top of the insulated operating rod is connected with a wire clamp through a screw rod; the back of the wire clamp is fixedly connected with one side face of the arc extinguishing mechanism through a connecting piece; the switching mechanism is arranged on one side, opposite to the wire clamp, outside the arc extinguishing mechanism; the wiring guide pillar is fixedly and electrically communicated with the bottom of the arc extinguishing mechanism; one end of the drainage wire is connected with the wiring guide pillar through an equipment wire clamp; the conducting wire is electrically communicated with the drainage wire through the conducting wire clamp, the arc extinguishing mechanism and the wiring guide pillar; in the arrangement, the top of the insulating operating rod is connected with the wire clamp through the screw rod, so that the operation of an operator is facilitated;
arc extinguishing mechanism includes: the arc extinguishing switch comprises an upper conductive cylinder, a lower conductive cylinder, a main insulating sleeve and an arc extinguishing switch; the lower part of the upper conductive cylinder is fixedly sleeved on the inner side of the upper part of the main insulating sleeve, the lower conductive cylinder is fixedly sleeved in the lower part of the main insulating sleeve, and the upper conductive cylinder, the main insulating sleeve and the lower conductive cylinder are coaxially arranged; the bottom of a central hole of the lower conductive cylinder is sealed; in order to evacuate heat generated by arc light and ensure the safety of equipment, the side wall of the lower conductive cylinder is internally provided with an exhaust hole along the axial direction; the arc suppression switch is arranged in the upper conductive cylinder, the main insulating sleeve and the lower conductive cylinder; the back of the wire clamp is fixedly connected with the outer side surface of the upper part of the upper conductive cylinder through a connecting piece; the top of the separating and combining mechanism is connected with the upper conductive cylinder and used for controlling the breaking and closing of the arc-extinguishing switch; one end of the wiring guide post penetrates through the side wall of the lower part of the main insulating sleeve and is fixedly connected with the side wall of the lower conductive cylinder;
an arc suppression switch, comprising: the upper surface chain type static contact, the lower surface chain type static contact, the pressure spring, the upper limiting disc and the movable contact rod are arranged on the upper surface of the upper surface chain type static contact; the upper surface chain type static contact is clamped on the inner side surface of the lower part of the upper conductive cylinder, and the lower surface chain type static contact is clamped on the inner side surface of the upper part of the lower conductive cylinder; the pressure spring is axially arranged in the middle of the inner side of the upper conductive cylinder, and the top of the pressure spring is fixedly connected with the upper conductive cylinder; the top surface of the upper limiting disc is fixedly connected with the bottom of the pressure spring and is arranged along the inner side wall of the upper conductive cylinder in a sliding manner, a through hole is formed in the center of the upper limiting disc and is fixedly sleeved on the upper part of the movable contact rod through the through hole, and the movable contact rod is limited to move along the axial direction; the top end of the movable contact rod is provided with a joint part, and the moving contact rod is controlled by the opening and closing mechanism through the joint part; the outer side surface of the middle part of the movable contact rod penetrates through the center of the upper surface chain type stationary contact to be electrically communicated with the side wall of the upper conductive cylinder; under the control of the separation and combination mechanism, the outer side surface of the lower part of the movable contact rod can fall into the center of the lower surface chain type stationary contact to be communicated with the side wall of the lower conductive cylinder; the switching-on and switching-off mechanism controls the connection and disconnection of the movable contact rod and the lower surface chain type stationary contact so as to control the on and off of the arc-extinguishing switch;
divide and shut mechanism includes: the breaking draw hook, the columnar lock tongue, the transmission mechanism, the insulating connecting rod, the pull rod, the limiting mechanism and the insulating pull rope are arranged on the frame; the transmission mechanism is arranged on the outer side of the upper part of the upper conductive cylinder, and the bottom of the transmission mechanism is fixedly connected with the pull rod through an insulating connecting rod; the bottom end of the pull rod is connected with the upper end of the insulating pull rope, and the pull rod is provided with a limiting mechanism which is used for controlling the pull-down action of the pull rod; the side wall of the upper conductive cylinder opposite to the wire clamp is provided with a split-joint slot hole along the direction vertical to the axial direction of the upper conductive cylinder, one end of a columnar lock tongue penetrates through the split-joint slot hole and extends into the upper conductive cylinder, and the other end of the columnar lock tongue is connected with a transmission mechanism; the breaking drag hook comprises an insulating grab handle and a columnar main body fixedly arranged below the insulating grab handle, wherein the bottom of the columnar main body is provided with a clamping groove matched with the joint part, and an inclined plane sliding groove is arranged above the clamping groove; the breaking drag hook is connected with the joint part through the clamping groove, the movable contact rod can be pulled upwards to disconnect the arc suppression switch, the columnar lock tongue can slide into and fix the joint part through the inclined chute, and then the movable contact rod is fixed, so that the arc suppression switch is kept disconnected; when the pull rod is pulled downwards, the transmission mechanism drives the columnar lock tongue to extend into one end of the upper conductive cylinder and retract into the side wall of the upper conductive cylinder, then the locking of the movable contact rod is released, and the movable contact rod falls into the center of the lower chain type stationary contact under the elastic force of the pressure spring, so that the arc suppression switch is closed.
Preferably, the transmission mechanism comprises: the device comprises a first fixed block, a second fixed block, a transmission frame, a connector and a tension spring; the first fixing block and the second fixing block are respectively arranged above and below the split-joint slot hole and are fixedly connected with the outer side surface of the upper part of the upper conductive cylinder; the second fixed block is provided with a pin hole, and a first pin shaft is fixedly arranged in the horizontal direction of the inner edge of the pin hole; the transmission frame is formed by oppositely fixing two transmission plates in parallel, and the lower part of the inner side of the transmission frame is rotationally connected with the first pin shaft; a second pin shaft is fixedly and horizontally arranged at the upper part of the inner side of the transmission frame, and a third pin shaft is fixedly arranged at the lower part of the outer side of the transmission frame; one end of the columnar lock tongue is rotationally connected with the second pin shaft; the bottom end of the connector is fixedly connected with the top end of the insulating connecting rod, the top end of the connector is fixedly connected with the bottom end of the tension spring, a slotted hole is formed in the middle of the connector, and the connector is rotatably connected with a third pin shaft through the slotted hole; the top end of the tension spring is fixedly connected with the first fixing block; when the insulating pull rod is pulled downwards, the transmission frame is driven to rotate outwards around the first pin shaft through the third pin shaft, and then the end, extending into the upper conductive cylinder, of the columnar lock tongue is driven to retract into the side wall of the upper conductive cylinder through the second pin shaft; when the pulling force of pull rod disappears, the pulling force of extension spring drives the driving frame and rotates around first round pin axle inboard, and then drives column spring bolt one end and stretches into in the electrically conductive section of thick bamboo of going up.
Preferably, the stop gear includes: the device comprises a first limiting sleeve, a first limiting marble, an insulating fixing sleeve, a second limiting marble and a second limiting sleeve; the first limiting sleeve is movably sleeved on the outer side of the upper part of the pull rod, and a limiting groove is formed in the inner wall of the first limiting sleeve along the circumference; the first limiting marble is arranged at the upper part of the pull rod, the position of the first limiting marble is matched with the position of the limiting groove, and the position of the first limiting sleeve on the pull rod is limited; the insulating fixing sleeve is fixedly arranged on the outer side surface of the lower part of the main insulating sleeve; the outer side surface of the second limiting sleeve is fixedly connected with the insulating fixing sleeve, and the second limiting sleeve is sleeved on the outer side of the lower part of the pull rod; the pull rod can move up and down relative to the second limiting sleeve; the second limiting marble is arranged in the middle of the pull rod and limits the movement of the pull rod in the second limiting sleeve; the top of the second limiting sleeve is circumferentially provided with a connecting part in a circular truncated cone shape, the inner side surface of the bottom of the first limiting sleeve is circumferentially provided with a connecting groove matched with the shape of the connecting part, and the second limiting marble is positioned above the connecting part and close to the connecting part; the second limiting marble, the connecting part and the connecting groove are mutually matched to limit the movement of the pull rod in the second limiting sleeve.
Preferably, the engaging portion includes: the clamping device comprises a clamping head in a cross shape, wherein a clamping table in a cap shape is arranged below the clamping head, and a locking groove is formed in the circumference below the clamping table; the chuck is rotatably connected with the chuck table; the columnar lock tongue can extend into the lock groove to lock the movable contact rod; the draw-in groove that column main part bottom set up includes: the first channel is arranged upwards from the bottom of the columnar main body along a radial direction and penetrates through the opposite side walls of the columnar main body; the second channel is formed in the bottom of the columnar main body along the central axis in the upward direction, and the size of the second channel is matched with that of the vertical part of the chuck; one end of the third channel is communicated with the top of the first channel, the third channel is arranged along the circumferential direction of the plane where the top of the first channel is located, and the circumferential dimension is between 1/5 circumferential length and 1/2 circumferential length of the columnar main body; the fourth channel and the third channel are symmetrically arranged.
Preferably, the wire clamp includes: the frame body is C-shaped; a movable tongue is pressed; the bottom of the frame body is provided with a threaded through hole; the screw rod penetrates through the threaded through hole, the bottom of the screw rod is fixedly connected with the top of the insulating operating rod, and the top end of the screw rod is movably connected with the bottom of the movable pressure tongue; the movable pressing tongue and the inner side surface of the frame body form a clamping space for the lead.
Preferably, the arc suppression switch further includes: a lower limiting plate made of an insulating material; the diameter of the lower limiting disc is matched with the inner diameter of the main insulating sleeve, a through hole is formed in the center of the lower limiting disc, and the lower limiting disc is fixedly sleeved on the outer side face of the lower part of the movable contact rod through the through hole; the lower limiting disc and the upper limiting disc jointly limit the movable contact rod to move axially along the center of the insulating sleeve when falling.
Preferably, the connecting piece is provided with a containing jack from top to bottom, and the containing jack is matched with the columnar main body of the breaking draw hook and used for containing the breaking draw hook.
Preferably, the overlap arc suppression device further includes: the insulating protective sleeve is sleeved on the top of the upper conductive cylinder and the outer side of the upper part of the transmission mechanism; the part of insulating protective sheath cover setting at last conductive tube top is seted up the through-hole that communicates with last conductive tube centre bore.
Preferably, the insulating operating rod and the upper conductive cylinder are arranged in an inclined manner.
Preferably, the handle is fixedly arranged on the outer side surface of the first limiting sleeve.
Above-mentioned 10kV live working overlap arc extinguishing device compares with prior art, has improved security and arc extinction effect, specifically is: firstly, by arranging the upper surface chain type static contact and the lower surface chain type static contact, when conducting electricity, the outer circumference of the movable contact rod is respectively surrounded by the upper surface chain type static contact and the lower surface chain type static contact, so that the purpose of electric communication with the side wall of the upper conductive cylinder and the side wall of the lower conductive cylinder is achieved, compared with single-point contact in the prior art, the contact point is not easy to wear, and the safety is higher; secondly, as the conductive path is formed by the upper conductive cylinder, the movable contact rod and the lower conductive cylinder, compared with the prior art in which the conductive path is formed by a conducting wire wound on an insulating connecting rod, the current capacity and the safety are improved; thirdly, the dividing and combining mechanism is arranged on the outer sides of the upper conductive cylinder, the lower conductive cylinder and the main insulating sleeve, and compared with the technology that the dividing and combining operating mechanism and the main insulating tube are coaxially arranged in the prior art, the main insulating sleeve has longer service life and higher safety under the condition of frequent operation; fourthly, compared with the technology that the moving contact moves upwards to the fixed contact in the prior art, the lower-surface chain type fixed contact is positioned below the moving contact rod, the moving contact rod moves downwards to the lower-surface chain type fixed contact under the combined action of the elasticity of the pressure spring and the self gravity, the moving speed is higher, the probability of generating arc light is lower, and therefore the arc extinction effect and the safety are better.
Drawings
Fig. 1 is a schematic perspective view of a first embodiment of the present invention.
Fig. 2 is a partial sectional view of the arc extinguishing switch according to the present invention.
Fig. 3 is a partial sectional view of the arc extinguishing switch according to the present invention when it is turned off.
Fig. 4 is a partial sectional perspective view of the arc extinguishing switch according to the present invention when it is turned off.
Fig. 5 is a detailed structural schematic diagram of the movable contact rod in the invention.
FIG. 6 is a detailed structural diagram of the breaking hook of the present invention.
Fig. 7 is a detailed structural diagram of a portion a in fig. 4.
Fig. 8 is a detailed structural diagram of a portion B in fig. 4.
Fig. 9 is a detailed structural diagram of a portion C in fig. 4.
Fig. 10 is a detailed structural schematic diagram of the limiting mechanism of the present invention.
In the figure: an insulating operation rod 1; a wire clamp 2; a frame body 20; a movable tongue 21; an arc extinguishing mechanism 3; an upper conductive barrel 30; opening and closing holes 300; a lower conductive barrel 31; a main insulating sleeve 32; upper surface chain type stationary contact 330; the lower table chain type stationary contact 331; a pressure spring 332; an upper limiting disk 333; a movable contact rod 334; a compression spring groove 335; the engaging portion 336; a chuck 3360; a clamp table 3361; a lock groove 3362; a lower limiting disc 337; an exhaust hole 34; breaking the drag hook 40; an insulating grip handle 400; a columnar body 401; a card slot 402; a first channel 4020; a second channel 4021; a third channel 4022; a fourth slot 4023; a bevel runner 403; a columnar latch tongue 41; the transmission mechanism 42; a first fixing block 420; a second fixing block 421; a transmission frame 422; a coupling head 423; a tension spring 424; a first pin 425; a second pin 426; a third pin 427; an insulating link 43; a pull rod 44; a limiting mechanism 45; a first stop sleeve 450; a first limit marble 451; an insulating fixing sleeve 452; a second position-limiting marble 453; a second restraining sleeve 454; a limit groove 455; a connecting portion 456; a connection groove 457; an insulating cord 46; a handle 47; a wiring guide post 5; a drainage wire 6; a screw 7; an equipment wire clamp 8; a connecting member 9; a receiving receptacle 90; an insulating protective sheath 91.
Detailed Description
The technical solutions and effects of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings of the present invention.
Referring to fig. 1, 2, 3, 4, 5 and 8, a 10kV live working lapping arc-extinguishing device includes: the device comprises an insulating operating rod 1, a wire clamp 2, an arc extinguishing mechanism 3, a separating and combining mechanism, a wiring guide pillar 5 and a drainage wire 6; the top of the insulating operating rod 1 is connected with the wire clamp 2 through a screw 7; the back of the wire clamp 2 is fixedly connected with one side surface of the arc extinguishing mechanism 3 through a connecting piece 9; the connecting piece 9 is made of conductive material; the switching mechanism is arranged on one side, opposite to the wire clamp 2, outside the arc extinguishing mechanism 3; the wiring guide post 5 is fixedly and electrically communicated with the bottom of the arc extinguishing mechanism 3; one end of the drainage wire 6 is connected with the wiring guide post 5 through an equipment wire clamp 8; the lead is electrically communicated with the drainage wire 6 through the lead clamp 2, the arc extinguishing mechanism 3 and the wiring guide post 5;
arc extinguishing mechanism 3 includes: an upper conductive cylinder 30, a lower conductive cylinder 31, a main insulating sleeve 32 and an arc extinguishing switch; the lower part of the upper conductive cylinder 30 is fixedly sleeved on the inner side of the upper part of the main insulating sleeve 32, the lower conductive cylinder 31 is fixedly sleeved in the lower part of the main insulating sleeve 32, and the upper conductive cylinder 30, the main insulating sleeve 32 and the lower conductive cylinder 31 are coaxially arranged; in order to eliminate the external influence of the arc, the main insulating sleeve 32 is made of an epoxy resin material; in order to confirm the state of the arc-extinguishing switch 32 conveniently, the main insulating sleeve 32 is transparent; the bottom of the central hole of the lower conductive cylinder 31 is sealed; the side wall of the lower conductive cylinder 31 is internally provided with an exhaust hole 34 along the axial direction; the arc suppression switch is arranged in the upper conductive cylinder 30, the main insulating sleeve 32 and the lower conductive cylinder 31; the back of the wire clamp 2 is fixedly connected with the outer side surface of the upper part of the upper conductive cylinder 30 through a connecting piece 9; the top of the separating and combining mechanism is connected with the upper conductive cylinder 30 and used for controlling the breaking and closing of the arc-extinguishing switch; one end of the wiring guide post 5 penetrates through the side wall of the lower part of the main insulating sleeve 32 and is fixedly connected with the side wall of the lower conductive cylinder 31;
an arc suppression switch, comprising: an upper surface chain type fixed contact 330, a lower surface chain type fixed contact 331, a pressure spring 332, an upper limiting disc 333 and a movable contact rod 334; the upper surface chain type static contact 330 is clamped on the inner side surface of the lower part of the upper conductive cylinder 30, and the lower surface chain type static contact 331 is clamped on the inner side surface of the upper part of the lower conductive cylinder 31; a pressure spring groove 335 is axially formed in the middle of the inner side of the upper conductive cylinder 30, a pressure spring 332 is axially arranged in the pressure spring groove 335, and the top of the pressure spring 332 is fixedly connected with the upper conductive cylinder 30; the top surface of the upper limiting disc 333 is fixedly connected with the bottom of the pressure spring 332, the diameter of the upper limiting disc 333 is matched with the pressure spring groove 335 and is arranged in a sliding way along the inner side wall of the upper conductive cylinder 30, namely the inner side wall of the pressure spring groove 335, the center of the upper limiting disc 333 is provided with a through hole and is fixedly sleeved on the upper part of the movable contact rod 334 through the through hole, and the movable contact rod 334 is limited to move along the axial direction; the top end of the movable contact rod 334 is provided with an engaging part 336, and the moving contact rod 334 is controlled by the on-off mechanism through the engaging part 336; the outer side surface of the middle part of the movable contact rod 334 passes through the center 330 of the upper surface chain type fixed contact to be electrically communicated with the side wall of the upper conductive cylinder 30; under the control of the separation and combination mechanism, the outer side surface of the lower part of the movable contact rod 334 can fall into the center of the lower chain type fixed contact 331 to be communicated with the side wall of the lower conductive cylinder 31; the switching mechanism is connected with and disconnected from the lower surface chain type stationary contact 331 through controlling the movable contact rod 334, and further controls the arc suppression switch to be connected and disconnected;
divide and shut mechanism includes: the breaking draw hook 40, the columnar bolt 41, the transmission mechanism 42, the insulating connecting rod 43, the pull rod 44, the limiting mechanism 45 and the insulating pull rope 46; the transmission mechanism 42 is arranged at the outer side of the upper part of the upper conductive cylinder 30, and the bottom of the transmission mechanism is fixedly connected with the pull rod 44 through an insulating connecting rod 43; the bottom end of the pull rod 44 is connected with the upper end of an insulating pull rope 46, a limiting mechanism 45 is arranged on the pull rod 44, and the limiting mechanism 45 is used for controlling the pull-down action of the pull rod 44; the side wall of the upper conductive cylinder 30 opposite to the wire clamp 2 is provided with a split-joint slot hole 300 along the direction vertical to the axial direction of the upper conductive cylinder 30, one end of a columnar lock tongue 41 penetrates through the split-joint slot hole 300 and extends into the upper conductive cylinder 30, and the other end is connected with a transmission mechanism 42; the breaking draw hook 40 comprises an insulating grab handle 400 and a columnar main body 401 fixedly arranged below the insulating grab handle 400, wherein the bottom of the columnar main body 401 is provided with a clamping groove 402 matched with the joint part 336, and an inclined chute 403 is arranged above the clamping groove 402; the inclined chute 403 starts from the radial center point of the cylindrical main body 401 at the top of the slot 402 and ends at the outer side surface of the cylindrical main body 401; the breaking drag hook 40 is connected with the joint part 336 through the clamping groove 402, the movable contact rod 334 can be pulled upwards to break the arc suppression switch, the columnar lock tongue 41 can slide into and fix the joint part 336 through the inclined sliding groove 403, and then the movable contact rod 334 is fixed, so that the arc suppression switch is kept to be disconnected; when the pull rod 44 is pulled down, the transmission mechanism 42 drives the columnar bolt 41 to extend into one end of the upper conductive cylinder 30 and retract into the side wall of the upper conductive cylinder 30, and then the locking of the movable contact rod 334 is released, and the movable contact rod 334 falls into the center of the lower chain type fixed contact 331 under the elastic force of the pressure spring 332, so that the arc suppression switch is closed. When the movable contact rod 334 is pulled upwards to disconnect the movable contact rod 334 from the lower surface chain type fixed contact 331, and the breaking hook 40 is inserted into the upper conductive cylinder 30 from the top and touches the columnar bolt 41, due to the arrangement of the inclined chute 403, the columnar bolt 41 gradually retracts into the side wall of the upper conductive cylinder 30 under the pressure action of the columnar body 401 of the breaking hook 40; when the movable contact rod 334 is fixed and pulled up by the breaking hook 40, the columnar bolt 41 gradually slides into the joint part 336 through the inclined chute 403, and finally the movable contact rod 334 is fixed, so that the arc-extinguishing switch keeps an off state.
Further, referring to fig. 4 and 7, the transmission mechanism 42 includes: a first fixed block 420, a second fixed block 421, a transmission frame 422, a connecting head 423 and a tension spring 424; the inner side of the transmission frame 422 is the side close to the upper conductive cylinder 30, and the outer side is the side far away from the upper conductive cylinder 30; the first fixing block 420 and the second fixing block 421 are respectively arranged above and below the split-joint slot hole 300 and are fixedly connected with the outer side surface of the upper part of the upper conductive cylinder 30; the second fixed block 421 is provided with a pin hole, and a first pin shaft 425 is fixedly arranged in the pin hole along the horizontal direction; the transmission frame 422 is knife-shaped and is formed by two transmission plates which are relatively fixed in parallel, the lower part of the inner side of the transmission frame is rotationally connected with the first pin shaft 425, and one edge-shaped side of the transmission frame is close to the upper conductive cylinder 30; a second pin shaft 426 is fixedly and horizontally arranged at the upper part of the inner side of the transmission frame 422, and a third pin shaft 427 is fixedly arranged at the lower part of the outer side; one end of the columnar bolt 41 is rotatably connected with the second pin 426; the bottom end of the connector 423 is fixedly connected with the top end of the insulating connecting rod 43, the top end of the connector 423 is fixedly connected with the bottom end of the tension spring 424, the middle part of the connector 423 is provided with a slotted hole, and the connector 423 is rotatably connected with the third pin roll 427 through the slotted hole; the top end of the tension spring 424 is fixedly connected with the first fixing block 420; when the insulating connecting rod 43 is pulled down, the driving frame 422 is driven to rotate outwards around the first pin roll 425 by the third pin roll 427, and then the end of the columnar bolt 41, which extends into the upper conductive cylinder 30, is driven to retract into the side wall of the upper conductive cylinder 30 by the second pin roll 426; when the pulling force of the pull rod 44 disappears, the driving frame 422 is driven by the pulling force of the tension spring 424 to rotate inwards around the first pin 425, so as to drive one end of the columnar bolt 41 to extend into the upper conductive cylinder 30.
Further, referring to fig. 4, 8 and 10, the limiting mechanism 45 includes: a first limit sleeve 450, a first limit marble 451, an insulating fixed sleeve 452, a second limit marble 453 and a second limit sleeve 454; the first limiting sleeve 451 is movably sleeved on the outer side of the upper part of the pull rod 44, and a limiting groove 455 is formed in the inner wall of the first limiting sleeve 450 along the circumference; the first limiting marble 451 is arranged at the upper part of the pull rod 44, the position of the first limiting marble 451 is matched with the position of the limiting groove 455, and the position of the first limiting sleeve 450 on the pull rod 44 is limited; the insulation fixing sleeve 452 is fixedly arranged on the outer side surface of the lower part of the main insulation sleeve 32; the outer side surface of the second limiting sleeve 454 is fixedly connected with the insulating fixing sleeve 452, and the second limiting sleeve 454 is sleeved on the outer side of the lower part of the pull rod 44; the pull rod 44 can move up and down relative to the second limit sleeve 454; the second limit marble 453 is arranged in the middle of the pull rod 44 to limit the movement of the pull rod 44 in the second limit sleeve 454; a connecting part 456 in a circular truncated cone shape is arranged at the top of the second limiting sleeve 454 along the circumference, a connecting groove 457 matched with the connecting part 456 in shape is formed in the inner side surface of the bottom of the first limiting sleeve 450 along the circumference, and a second limiting marble 453 is positioned above the connecting part and close to the connecting part 456; the second restraining bead 453, the connecting portion 456, and the connecting groove 457 cooperate to limit movement of the pull rod 44 within the second restraining sleeve 454. The second limit marble 453 limits that the pull rod 44 cannot be directly pulled down; when the first limiting marble 451 is placed in the limiting groove 455, the first limiting sleeve 450 is limited at the axial position of the pull rod 44, downward pulling force is applied to the first limiting sleeve 450, the first limiting marble 451 retracts into the pull rod and limits the first limiting sleeve 450, the first limiting sleeve 450 falls to the middle of the pull rod 44, the connecting groove 457 is buckled with the connecting part 456, the second limiting marble 453 is partially pressed into the pull rod 44, the insulating pull rope 46 is pulled at the moment, the second limiting marble 453 retracts into the pull rod 44 completely, the limit of the pull rod 44 is released, the pull rod 44 is pulled down, and meanwhile, the cylindrical lock tongue 41 is driven by the insulating connecting rod 43 and the transmission frame 422 to retract into the inner wall of the upper conductive barrel 30.
Further, referring to fig. 5 and 6, the engaging portion 336 includes: the clamping device comprises a cross-shaped clamping head 3360, a cap-shaped clamping table 3361 is arranged below the clamping head, and a locking groove 3362 is formed along the circumference below the clamping table 3361; the clamping head 3360 is rotatably connected with the clamping table 3361; the columnar bolt 41 can extend into the lock groove 3362 to lock the movable contact rod 334; the draw-in groove 402 that cylindrical main part 401 bottom set up includes: a first slot 4020 which is formed upward from the bottom of the columnar body 401 along a radial direction and penetrates through the opposite side walls of the columnar body 401; a second channel 4021, which is formed from the bottom of the cylindrical body 401 upward along the central axis and has a size matched with the vertical portion of the chuck 3360; one end of the third groove 4022 is communicated with the top of the first groove 4020, and is formed along the circumferential direction of the plane where the top of the first groove 4020 is located, and the circumferential dimension is between 1/5 circumferential length and 1/2 circumferential length of the columnar main body 401; the fourth slot 4023 and the third slot 4022 are symmetrically disposed.
Through the arrangement, the first groove channel 4020 and the second groove channel 4021 form a cross shape and are matched with the shape of the chuck 3360; when the breaking hook 40 is inserted into the upper conductive cylinder 30, first, the cross-shaped clamp 3360 falls into the first channel 4020 and the second channel 4021, the breaking hook 40 is rotated, the horizontal portion of the cross-shaped clamp 3360 is screwed into the third channel 4022 and the fourth channel 4023, the clamp 3360, i.e., the movable contact rod 334 is fixed by the breaking hook 40, the breaking hook 40 is pulled up, and the columnar bolt 41 slides through the inclined chute 403 and the clamping table, slides into the locking groove 3362, and locks the movable contact rod 334.
Further, referring to fig. 1, in order to facilitate the adjustment of the wire clamping by the operator, the wire clamp 2 includes: a frame body 20 in a C shape; a movable tongue 21; the bottom of the frame body 20 is provided with a threaded through hole; the screw 7 penetrates through the threaded through hole, the bottom of the screw is fixedly connected with the top of the insulating operating rod 1, and the top end of the screw is movably connected with the bottom of the movable pressing tongue 21; the movable pressing tongue 21 and the inner side surface of the frame body 20 form a clamping space for the lead.
Further, as shown in fig. 2 and 3, in order to ensure that the movable contact 334 falls into the center of the lower chain type stationary contact 331 more accurately when falling, the arc extinguishing switch further includes: a lower limiting plate 337 made of an insulating material; the diameter of the lower limiting disc 337 is matched with the inner diameter of the main insulating sleeve 32, a through hole is arranged in the center, and the lower outer side surface of the movable contact rod 334 is fixedly sleeved through the through hole; the lower and upper limiting discs 337 and 333 cooperate to limit axial movement of the movable contact rod 334 centrally along the main insulating sleeve 32 when dropped.
Further, referring to fig. 1 and 4, in order to facilitate the storage of the dividing hook 40 when it is idle, the connecting member 9 is provided with a storage socket 90 from top to bottom, and the storage socket 90 is matched with the columnar body 401 of the dividing hook 40 for storing the dividing hook 40.
Further, referring to fig. 1 and 3, in order to further improve the operation safety and the life of the equipment, the overlap arc extinguishing device further includes: an insulating protective sleeve 91 sleeved on the top of the upper conductive cylinder 30 and outside the upper part of the transmission mechanism 42; the insulating protective sleeve 91 is sleeved on the top of the upper conductive tube 30 and is provided with a through hole communicated with the central hole of the upper conductive tube 30.
Further, as shown in fig. 1, in order to facilitate observation of the operator when the operator grips the wire and to keep the operator away from the arc extinguishing mechanism 3 as much as possible to improve the safety of the operation, the insulating operating rod 1 and the upper conductive cylinder 30 are provided in an inclined shape.
Further, referring to fig. 8, in order to pull down the first limiting sleeve 450, a pull tab 47 is fixedly disposed on an outer side surface of the first limiting sleeve 450.
The working principle and the process of the invention are as follows:
firstly, an operator pulls up the movable contact rod through the breaking drag hook to disconnect the movable contact rod from the lower surface chain type fixed contact and keep the arc suppression switch in a disconnected state; secondly, the operating personnel rotate the insulating operating rod to enable the wire clamp to clamp and fix the overhead wire; then, the first limiting sleeve is pulled downwards to enable the connecting part and the connecting groove to be buckled, the insulating pull rope is further pulled to drive the pull rod to be pulled downwards, so that the columnar lock tongue is driven by the transmission mechanism to retract into the side wall of the upper conductive cylinder from the locking groove, the locking of the movable contact rod is released, the movable contact rod falls to the center of the lower surface chain type stationary contact under the elasticity and the self gravity of the pressure spring, and the arc suppression switch is closed; finally, after the operation is completed, the insulating operating rod is rotated to separate the device from the wire.
Above-mentioned 10kV live working overlap arc extinguishing device compares with prior art, has improved security and arc extinction effect, specifically is: firstly, by arranging the upper surface chain type static contact and the lower surface chain type static contact, when conducting electricity, the outer circumference of the movable contact rod is respectively surrounded by the upper surface chain type static contact and the lower surface chain type static contact, so that the purpose of electric communication with the side wall of the upper conductive cylinder and the side wall of the lower conductive cylinder is achieved, compared with single-point contact in the prior art, the contact point is not easy to wear, and the safety is higher; secondly, as the conductive path is formed by the upper conductive cylinder, the movable contact rod and the lower conductive cylinder, compared with the prior art in which the conductive path is formed by a conducting wire wound on an insulating connecting rod, the current capacity and the safety are improved; thirdly, the dividing and combining mechanism is arranged on the outer sides of the upper conductive cylinder, the lower conductive cylinder and the main insulating sleeve, and compared with the technology that the dividing and combining operating mechanism and the main insulating tube are coaxially arranged in the prior art, the main insulating sleeve has longer service life and higher safety under the condition of frequent operation; fourthly, compared with the technology that the moving contact moves upwards to the fixed contact in the prior art, the lower-surface chain type fixed contact is positioned below the moving contact rod, the moving contact rod moves downwards to the lower-surface chain type fixed contact under the combined action of the elasticity of the pressure spring and the self gravity, the moving speed is higher, the probability of generating arc light is lower, and therefore the arc extinction effect and the safety are better.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a 10kV live working overlap arc extinguishing device which characterized in that includes: the arc extinguishing device comprises an insulating operating rod, a wire clamp, an arc extinguishing mechanism, a switching mechanism, a wiring guide pillar and a drainage wire; the top of the insulated operating rod is connected with a wire clamp through a screw rod; the back of the wire clamp is fixedly connected with one side face of the arc extinguishing mechanism through a connecting piece; the switching mechanism is arranged on one side, opposite to the wire clamp, outside the arc extinguishing mechanism; the wiring guide pillar is fixedly and electrically communicated with the bottom of the arc extinguishing mechanism; one end of the drainage wire is connected with the wiring guide pillar through an equipment wire clamp; the conducting wire is electrically communicated with the drainage wire through the conducting wire clamp, the arc extinguishing mechanism and the wiring guide pillar;
arc extinguishing mechanism includes: the arc extinguishing switch comprises an upper conductive cylinder, a lower conductive cylinder, a main insulating sleeve and an arc extinguishing switch; the lower part of the upper conductive cylinder is fixedly sleeved on the inner side of the upper part of the main insulating sleeve, the lower conductive cylinder is fixedly sleeved in the lower part of the main insulating sleeve, and the upper conductive cylinder, the main insulating sleeve and the lower conductive cylinder are coaxially arranged; the bottom of a central hole of the lower conductive cylinder is sealed; the side wall of the lower conductive cylinder is internally provided with an exhaust hole along the axial direction; the arc suppression switch is arranged in the upper conductive cylinder, the main insulating sleeve and the lower conductive cylinder; the back of the wire clamp is fixedly connected with the outer side surface of the upper part of the upper conductive cylinder through a connecting piece; the top of the separating and combining mechanism is connected with the upper conductive cylinder and used for controlling the breaking and closing of the arc-extinguishing switch; one end of the wiring guide post penetrates through the side wall of the lower part of the main insulating sleeve and is fixedly connected with the side wall of the lower conductive cylinder;
an arc suppression switch, comprising: the upper surface chain type static contact, the lower surface chain type static contact, the pressure spring, the upper limiting disc and the movable contact rod are arranged on the upper surface of the upper surface chain type static contact; the upper surface chain type static contact is clamped on the inner side surface of the lower part of the upper conductive cylinder, and the lower surface chain type static contact is clamped on the inner side surface of the upper part of the lower conductive cylinder; the pressure spring is axially arranged in the middle of the inner side of the upper conductive cylinder, and the top of the pressure spring is fixedly connected with the upper conductive cylinder; the top surface of the upper limiting disc is fixedly connected with the bottom of the pressure spring and is arranged along the inner side wall of the upper conductive cylinder in a sliding manner, a through hole is formed in the center of the upper limiting disc and is fixedly sleeved on the upper part of the movable contact rod through the through hole, and the movable contact rod is limited to move along the axial direction; the top end of the movable contact rod is provided with a joint part, and the moving contact rod is controlled by the opening and closing mechanism through the joint part;
the outer side surface of the middle part of the movable contact rod penetrates through the center of the upper surface chain type stationary contact to be electrically communicated with the side wall of the upper conductive cylinder; under the control of the separation and combination mechanism, the outer side surface of the lower part of the movable contact rod can fall into the center of the lower surface chain type stationary contact to be communicated with the side wall of the lower conductive cylinder; the switching-on and switching-off mechanism controls the connection and disconnection of the movable contact rod and the lower surface chain type stationary contact so as to control the on and off of the arc-extinguishing switch;
divide and shut mechanism includes: the breaking draw hook, the columnar lock tongue, the transmission mechanism, the insulating connecting rod, the pull rod, the limiting mechanism and the insulating pull rope are arranged on the frame; the transmission mechanism is arranged on the outer side of the upper part of the upper conductive cylinder, and the bottom of the transmission mechanism is fixedly connected with the pull rod through an insulating connecting rod; the bottom end of the pull rod is connected with the upper end of the insulating pull rope, and the pull rod is provided with a limiting mechanism which is used for controlling the pull-down action of the pull rod; the side wall of the upper conductive cylinder opposite to the wire clamp is provided with a split-joint slot hole along the direction vertical to the axial direction of the upper conductive cylinder, one end of a columnar lock tongue penetrates through the split-joint slot hole and extends into the upper conductive cylinder, and the other end of the columnar lock tongue is connected with a transmission mechanism; the breaking drag hook comprises an insulating grab handle and a columnar main body fixedly arranged below the insulating grab handle, wherein the bottom of the columnar main body is provided with a clamping groove matched with the joint part, and an inclined plane sliding groove is arranged above the clamping groove; the breaking drag hook is connected with the joint part through the clamping groove, the movable contact rod can be pulled upwards to disconnect the arc suppression switch, the columnar lock tongue can slide into and fix the joint part through the inclined chute, and then the movable contact rod is fixed, so that the arc suppression switch is kept disconnected; when the pull rod is pulled downwards, the transmission mechanism drives the columnar lock tongue to extend into one end of the upper conductive cylinder and retract into the side wall of the upper conductive cylinder, then the locking of the movable contact rod is released, and the movable contact rod falls into the center of the lower chain type stationary contact under the elastic force of the pressure spring, so that the arc suppression switch is closed.
2. The 10kV live working lapping arc extinguishing device of claim 1, characterized in that: a transmission mechanism comprising: the device comprises a first fixed block, a second fixed block, a transmission frame, a connector and a tension spring; the first fixing block and the second fixing block are respectively arranged above and below the split-joint slot hole and are fixedly connected with the outer side surface of the upper part of the upper conductive cylinder; the second fixed block is provided with a pin hole, and a first pin shaft is fixedly arranged in the horizontal direction of the inner edge of the pin hole; the transmission frame is formed by oppositely fixing two transmission plates in parallel, and the lower part of the inner side of the transmission frame is rotationally connected with the first pin shaft; a second pin shaft is fixedly and horizontally arranged at the upper part of the inner side of the transmission frame, and a third pin shaft is fixedly arranged at the lower part of the outer side of the transmission frame; one end of the columnar lock tongue is rotationally connected with the second pin shaft; the bottom end of the connector is fixedly connected with the top end of the insulating connecting rod, the top end of the connector is fixedly connected with the bottom end of the tension spring, a slotted hole is formed in the middle of the connector, and the connector is rotatably connected with a third pin shaft through the slotted hole; the top end of the tension spring is fixedly connected with the first fixing block; when the insulating pull rod is pulled downwards, the transmission frame is driven to rotate outwards around the first pin shaft through the third pin shaft, and then the end, extending into the upper conductive cylinder, of the columnar lock tongue is driven to retract into the side wall of the upper conductive cylinder through the second pin shaft; when the pulling force of pull rod disappears, the pulling force of extension spring drives the driving frame and rotates around first round pin axle inboard, and then drives column spring bolt one end and stretches into in the electrically conductive section of thick bamboo of going up.
3. The 10kV live working lapping arc extinguishing device of claim 1, characterized in that: stop gear includes: the device comprises a first limiting sleeve, a first limiting marble, an insulating fixing sleeve, a second limiting marble and a second limiting sleeve; the first limiting sleeve is movably sleeved on the outer side of the upper part of the pull rod, and a limiting groove is formed in the inner wall of the first limiting sleeve along the circumference; the first limiting marble is arranged at the upper part of the pull rod, the position of the first limiting marble is matched with the position of the limiting groove, and the position of the first limiting sleeve on the pull rod is limited; the insulating fixing sleeve is fixedly arranged on the outer side surface of the lower part of the main insulating sleeve; the outer side surface of the second limiting sleeve is fixedly connected with the insulating fixing sleeve, and the second limiting sleeve is sleeved on the outer side of the lower part of the pull rod; the pull rod can move up and down relative to the second limiting sleeve; the second limiting marble is arranged in the middle of the pull rod and limits the movement of the pull rod in the second limiting sleeve; the top of the second limiting sleeve is circumferentially provided with a connecting part in a circular truncated cone shape, the inner side surface of the bottom of the first limiting sleeve is circumferentially provided with a connecting groove matched with the shape of the connecting part, and the second limiting marble is positioned above the connecting part and close to the connecting part; the second limiting marble, the connecting part and the connecting groove are mutually matched to limit the movement of the pull rod in the second limiting sleeve.
4. The 10kV live working lapping arc extinguishing device of claim 1, characterized in that: the joint, comprising: the clamping device comprises a clamping head in a cross shape, wherein a clamping table in a cap shape is arranged below the clamping head, and a locking groove is formed in the circumference below the clamping table; the clamping head is rotatably connected with the clamping table; the columnar lock tongue can extend into the lock groove to lock the movable contact rod; the draw-in groove that column main part bottom set up includes: the first channel is arranged upwards from the bottom of the columnar main body along a radial direction and penetrates through the opposite side walls of the columnar main body; the second channel is formed in the bottom of the columnar main body along the central axis in the upward direction, and the size of the second channel is matched with that of the vertical part of the chuck; one end of the third channel is communicated with the top of the first channel, the third channel is arranged along the circumferential direction of the plane where the top of the first channel is located, and the circumferential dimension is between 1/5 circumferential length and 1/2 circumferential length of the columnar main body; the fourth channel and the third channel are symmetrically arranged.
5. The 10kV live working lapping arc extinguishing device of claim 1, characterized in that: a wire clamp comprising: the frame body is C-shaped; a movable tongue is pressed; the bottom of the frame body is provided with a threaded through hole; the screw rod penetrates through the threaded through hole, the bottom of the screw rod is fixedly connected with the top of the insulating operating rod, and the top end of the screw rod is movably connected with the bottom of the movable pressure tongue; the movable pressing tongue and the inner side surface of the frame body form a clamping space for the lead.
6. The 10kV live working lapping arc extinguishing device of claim 1, characterized in that: the arc extinction switch still includes: a lower limiting plate made of an insulating material; the diameter of the lower limiting disc is matched with the inner diameter of the main insulating sleeve, a through hole is formed in the center of the lower limiting disc, and the lower limiting disc is fixedly sleeved on the outer side face of the lower part of the movable contact rod through the through hole; the lower limiting disc and the upper limiting disc jointly limit the movable contact rod to move axially along the center of the insulating sleeve when falling.
7. The 10kV live working lapping arc extinguishing device of claim 1, characterized in that: the connecting piece is provided with a containing jack from top to bottom, and the containing jack is matched with the columnar main body of the breaking drag hook and used for containing the breaking drag hook.
8. The 10kV live working lapping arc extinguishing device of claim 1, characterized in that: further comprising: the insulating protective sleeve is sleeved on the top of the upper conductive cylinder and the outer side of the upper part of the transmission mechanism; the part of insulating protective sheath cover setting at last conductive tube top is seted up the through-hole that communicates with last conductive tube centre bore.
9. The 10kV live working lapping arc extinguishing device of claim 1, characterized in that: the insulating operating rod and the upper conductive cylinder are arranged in an inclined manner.
10. The 10kV live working lapping arc extinguishing device according to claim 3, characterized in that: and a handle is fixedly arranged on the outer side surface of the first limiting sleeve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011580970.5A CN112670727B (en) | 2020-12-28 | 2020-12-28 | 10KV live working overlap joint arc suppression device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011580970.5A CN112670727B (en) | 2020-12-28 | 2020-12-28 | 10KV live working overlap joint arc suppression device |
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| Publication Number | Publication Date |
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| CN112670727A true CN112670727A (en) | 2021-04-16 |
| CN112670727B CN112670727B (en) | 2024-04-26 |
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| CN202011580970.5A Active CN112670727B (en) | 2020-12-28 | 2020-12-28 | 10KV live working overlap joint arc suppression device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117153615A (en) * | 2023-08-18 | 2023-12-01 | 国网安徽省电力有限公司来安县供电公司 | High-stability arc extinguishing device of high-voltage switch |
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| CN112670727B (en) | 2024-04-26 |
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